$OpenBSD: patch-cursor_c,v 1.1 2017/04/28 12:29:33 espie Exp $
--- cursor.c.orig	Fri Apr 28 14:17:59 2017
+++ cursor.c	Fri Apr 28 14:18:42 2017
@@ -162,6 +162,7 @@ int		n;
  * Moves cursor down amount lines, scrolls if necessary.
  * Won't leave scrolling region. No carriage return.
  */
+void
 Index(screen, amount)
 register TScreen	*screen;
 register int	amount;
@@ -186,6 +187,7 @@ register int	amount;
  * Moves cursor up amount lines, reverse scrolls if necessary.
  * Won't leave scrolling region. No carriage return.
  */
+void
 RevIndex(screen, amount)
 register TScreen	*screen;
 register int	amount;
